US2830534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplicating machine
Assignee: HEYER Corp
•
Filing: 1954-04-01
•
Granted: 1958-04-15
•
Expires: 1974-04-01
Abstract
No abstract record available.
Inventors
- 👤 Edward M Springer
- 👤 Francis K Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:47
CPC Classifications
B; B41; B41L; B41L11/00; B41L11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19951E
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US2622518A
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US2565370A
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US2569738A
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US2536679A
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US2661686A
Cited
US2655866A
Cited
US2661688A
Cited
US2666412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |